package fuwuqi;

import fuwuqi.MyDC;

import java.util.Scanner;

           public class MyDCTester  {

             public static void main (String[] args) {

             String expression, again;

             int result;

             try
             {
                   Scanner in = new Scanner(System.in);

                   do
                       {
                         MyDC evaluator = new MyDC();
                         System.out.println ("Enter a valid postfix expression: ");
                         expression = in.nextLine();

                         result = evaluator.evaluate (expression);
                         System.out.println();
                         System.out.println ("That expression equals " + result);

                         System.out.print ("Evaluate another expression [Y/N]? ");
                         again = in.nextLine();
                         System.out.println();
                       }
                   while (again.equalsIgnoreCase("y"));
                 }
             catch (Exception IOException)
             {
                   System.out.println("Input exception reported");
                 }
           }
  }